Jake Gyllenhaal: Shirtless on 'Man vs. Wild'!

The 30-year-old actor traveled to Iceland with Bear to cross mountains and check out glaciers and active volcanoes!

“The wild is always very revealing – not only physically but mentally. You’ve got to smile when it’s driving horizontal hail and be able to face your fears and just get on and do it – and on both of those accounts, Jake came up strong,” Bearsaid.

If you missed watching Jake and Bear take on the wild, the Man vs. Wild episode will be replayed on Sunday (July 17) at 10/9c on Discovery!

20+ pictures inside of Jake Gyllenhaal going shirtless while crossing a frozen river with Bear Grylls…